Unanswered A couple of questions from a Newbie

This is eSun (inland). I put it at 190 and am printing again. We'll see how it turns out.

 

Well it looks like the stringing was fixed by reducing the temp to 190 from 195. I also made sure the fan was on at 100%. Last time it was on at 50%. Have to check why it didn't come on full in settings.

I am still getting a little scarring from the nozzle. I increased the Z-lift by a slight amount. Should I lift it more or am I adjusting the wrong setting?

 

I had a similar issue (first layer looked exactly like that) and my fix was to install a new nozzle. Must have been partially clogged. I noticed when I would extrude filament in the air, it would curl up and touch the outside of the nozzle. With the new nozzle, it extrudes straight down never touching the outside of the nozzle.

 

Another option would be to invest in some extruder cleaner filament. Unless you have a physical issue like a gouge with the nozzle or a nightmare of a clog, then this filament is great for keeping the flow reliable. I use <100mm or so every so often and will do about <50mm when doing some filament changes to make sure the old is out. It helps with going from black to white and not getting the bits in the next print. The roll I got last year still has a lot left and just gives me a bit of insurance/confidence that the hotend isn't clogged.

https://printedsolid.com/products/extruder-cleaning-filament

 

Thanks Ryan and Dan. I actually bought some of the cleaning filament the other day so I'll try using it tonight. That said, I am fairly certain my nozzle is flowing fine, I get a nice straight even line of filament extruded. I switch rolls of filament to another color last night - same manufacturer, and it was very stringy. I ended up reducing temps to about 186 which got rid of them and printed fine, but I am worried that printing that low will affect the durability - and cause it to be brittle. Am I off base here?

 

So as long as it is extruding smoothly I don't have to worry about the temp being so low it causes brittleness - correct?

 

Perfect, thanks Mark!